Al-Baqarah 2:217 يسالونك عن الشهر الحرام قتال فيه قل قتال فيه كبير وصد عن سبيل الله وكفر به والمسجد الحرام واخراج اهله منه اكبر عند الله والفتنة اكبر من القتل ولا يزالون يقاتلونكم حتى يردوكم عن دينكم ان استطاعوا ومن يرتدد منكم عن دينه فيمت وهو كافر فاولايك حبطت اعمالهم في الدنيا والاخرة واولايك اصحاب النار هم فيها خالدون ٢١٧

They ask thee concerning fighting in the Prohibited Month. Say: "Fighting therein is a grave (offence); but graver is it in the sight of Allah to prevent access to the path of Allah, to deny Him, to prevent access to the Sacred Mosque, and drive out its members." Tumult and oppression are worse than slaughter. Nor will they cease fighting you until they turn you back from your faith if they can. And if any of you Turn back from their faith and die in unbelief, their works will bear no fruit in this life and in the Hereafter; they will be companions of the Fire and will abide therein.